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SUMMARY:Violation of scaling of  total charged-particle multiplicity norm
 alized by the number of nucleons-participants in central Xe-Xe and Pb-Pb c
 ollisions
DTSTART;VALUE=DATE-TIME:20241022T140500Z
DTEND;VALUE=DATE-TIME:20241022T160000Z
DTSTAMP;VALUE=DATE-TIME:20260714T013313Z
UID:indico-contribution-4340@cern.ch
DESCRIPTION:Speakers: Svetlana Simak (LUHEP\, SPbSU)\nWe present a further
  development of the Modified Monte Carlo Glauber model  (MGM) [1]\,[2]\, w
 hich takes into account at the given impact parameter of heavy nuclei inte
 raction\, for each  nucleon\, the fraction (k) of energy loss\, arising du
 ring the consecutive inelastic nucleon-nucleon collisions due to multiple 
 production of particles. The one-parameter model  also takes into account\
 , at each step of the consecutive binary collisions\,  the corresponding d
 ecreases of the inelastic cross section value and of the charged particles
  yield. We updated the MGM code  for the collisions of the deformed nuclei
  and for the possibility to reveal the contributions by different certain 
 numbers of binary collisions  to the total charged-particle multiplicity. 
 \n	This study was motivated by the results [3] on the first measurements o
 f the charged-particle multiplicity density  and total charged-particle mu
 ltiplicity  in Xe–Xe collisions at a centre-of-mass energy per nucleon
 –nucleon pair of $\\sqrt{s_{NN}} = 5.44$ TeV. The  strong effect  of vio
 lation of scaling of the total charged-particle multiplicity normalized by
  the number of nucleons-participants  was observed in [3]  in  the region
  of very central Xe–Xe and Pb-Pb collisions. **We show for both undeform
 ed and deformed nuclei\, that our one-parameter model successfully explain
 s the observed deviation of scaling with the number of  nucleons-participa
 nts at the LHC energies.**\n\nThe authors acknowledge Saint-Petersburg Sta
 te University for a research project 95413904\n\n[1] Feofilov G.\, Ivanov 
 A. // Journal of Physics G CS. 5. 2005. P. 230-237\n\n[2] Feofilov G.\, Se
 ryakov A. // AIP Conference Proceedings. 2016.1701.1. P. 07000\n\n[3] AlLI
 CE Collaboration\, //Physics Letters. B 790.2019. 35–48\n\nhttps://indic
 o.particle.mephi.ru/event/436/contributions/4340/
LOCATION: Alexeevskiy hall
URL:https://indico.particle.mephi.ru/event/436/contributions/4340/
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